/
js8080simBundle.js
3283 lines (3123 loc) · 76.4 KB
/
js8080simBundle.js
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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.js8080sim = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
'use strict';
const MEMORY_SIZE = 64 * 1024;
// Custom exception type thrown by the assembler.
class AssemblyError extends Error {
constructor(message, pos) {
super(message);
this.pos = pos;
}
toString() {
return `Assembly error at ${this.pos}: ${this.message}`;
}
}
class Assembler {
constructor() {
// memory is the memory map being build during assembly.
this.memory = new Array(MEMORY_SIZE).fill(0);
// labelToAddr maps label names to addresses. We fill this up as we go.
// When a label is defined we know what the current address is, so we add
// an entry.
this.labelToAddr = new Map();
// labelToFixups maps label names to an array of fixup addresses where
// these labels are requested. This is filled up during assembly when we
// encounter refereces to labels. In the fixup stage these are applied to
// the proper places in the final memory map.
// Each entry in this map is an object:
// {
// addr: the address where the fixup is needed,
// pos: reference to this label in the source
// }
this.labelToFixups = new Map();
// tracing sets a tracing/debugging mode for the assembler where it reports
// all the instructions it's processing and their encodings.
this.tracing = false;
}
// Assembles the given source lines. Returns [memory, labelToAddr].
// memory is the assembled memory array. labelToAddr is a Map object mapping
// labels to addresses in memory.
assemble(sourceLines) {
this._assembleInstructions(sourceLines);
this._applyFixups();
return [this.memory, this.labelToAddr];
}
// Set tracing mode: true or false;
setTracing(tracing) {
this.tracing = tracing;
}
_assembleInstructions(sourceLines) {
// curAddr is the current address into which the next instruction is going
// to be assembled.
let curAddr = 0;
for (let sl of sourceLines) {
if (sl.label !== null) {
if (this.labelToAddr.has(sl.label)) {
this._assemblyError(sl.pos, `duplicate label "${sl.label}"`);
}
if (this.tracing) {
console.log(`Setting label ${sl.label}=0x${curAddr.toString(16)}`);
}
this.labelToAddr.set(sl.label, curAddr);
}
// Instruction encoding here.
if (sl.instr !== null) {
let encoded = this._encodeInstruction(sl, curAddr);
if (this.tracing) {
console.log(`0x${curAddr.toString(16)} =>`, encoded.map((e) => e.toString(16)));
}
for (let i = 0; i < encoded.length; i++) {
this.memory[curAddr++] = encoded[i];
}
}
}
}
_applyFixups() {
for (let label of this.labelToFixups.keys()) {
let addr = this.labelToAddr.get(label);
if (addr === undefined) {
const user = this.labelToFixups.get(label)[0];
this._assemblyError(user.pos, `label '${label}' used but not defined`);
}
let addrLowByte = addr & 0xff;
let addrHighByte = (addr >> 8) & 0xff;
// Label is defined. Apply its address in each user location. User
// locations point to an instruction:
//
// mem: [...., instr opcode, <low byte slot>, <high byte slot>, ...]
// ^
// |
// user.addr
//
for (let user of this.labelToFixups.get(label)) {
this.memory[user.addr + 1] = addrLowByte;
this.memory[user.addr + 2] = addrHighByte;
if (this.tracing) {
let vals = this.memory.slice(user.addr, user.addr + 3).map(
(val) => {return val.toString(16);});
console.log(`applied fixup at 0x${user.addr.toString(16)}: [${vals}]`);
}
}
}
}
// Encodes the instruction in source line sl into an array of numbers,
// and returns the array. curAddr is passed in so this method could update
// the labelsToFixups field when it encounters label references.
// Follows encodings in http://www.classiccmp.org/dunfield/r/8080.txt
_encodeInstruction(sl, curAddr) {
if (this.tracing) {
console.log('assembling', JSON.stringify(sl));
}
const instrName = sl.instr.toLowerCase();
switch (instrName) {
case 'adc': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b10001000 | r];
}
case 'add': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b10000000 | r];
}
case 'aci': {
this._expectArgsCount(sl, 1);
let imm = this._argImm(sl, sl.args[0]);
return [0b11001110, imm];
}
case 'adi': {
this._expectArgsCount(sl, 1);
let imm = this._argImm(sl, sl.args[0]);
return [0b11000110, imm];
}
case 'ana': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b10100000 | r];
}
case 'ani': {
this._expectArgsCount(sl, 1);
let imm = this._argImm(sl, sl.args[0]);
return [0b11100110, imm];
}
case 'call':
case 'cc':
case 'cnc':
case 'cnz':
case 'cm':
case 'cp':
case 'cpe':
case 'cpo':
case 'cz': {
this._expectArgsCount(sl, 1);
this._argLabel(sl, sl.args[0], curAddr);
let ie = 0;
if (instrName === 'call') {
ie = 0b11001101;
} else {
let ccc = instrName.slice(1);
ie = 0b11000100 | (this._translateCCC(ccc, sl) << 3);
}
return [ie, 0, 0];
}
case 'cma': {
this._expectArgsCount(sl, 0);
return [0b00101111];
}
case 'cmc': {
this._expectArgsCount(sl, 0);
return [0b00111111];
}
case 'cmp': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b10111000 | r];
}
case 'cpi': {
this._expectArgsCount(sl, 1);
let imm = this._argImm(sl, sl.args[0]);
return [0b11111110, imm];
}
case 'dad': {
this._expectArgsCount(sl, 1);
let rp = this._argRP(sl, sl.args[0]);
return [0b00001001 | (rp << 4)];
}
case 'db': {
// Pseudo-instruction that simply assigns its immediate args to memory.
if (sl.args.length == 1 && sl.args[0] instanceof Array) {
// If 'db' has a single array argument, it comes from a STRING.
return sl.args[0].map((c) => {return c.charCodeAt(0);});
} else {
return sl.args.map((arg) => {return this._argImm(sl, arg);});
}
}
case 'dw': {
// Pseudo-instruction that treats immediate args as 2-byte words, and
// assigns them to memory in little-endian.
let enc = [];
for (let arg of sl.args) {
let argEnc = this._argImm(sl, arg);
enc.push(argEnc & 0xFF);
enc.push((argEnc >> 8) & 0xFF);
}
return enc;
}
case 'dcr': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b00000101 | (r << 3)];
}
case 'dcx': {
this._expectArgsCount(sl, 1);
let rp = this._argRP(sl, sl.args[0]);
return [0b00001011 | (rp << 4)];
}
case 'hlt': {
this._expectArgsCount(sl, 0);
return [0b01110110];
}
case 'inr': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b00000100 | (r << 3)];
}
case 'inx': {
this._expectArgsCount(sl, 1);
let rp = this._argRP(sl, sl.args[0]);
return [0b00000011 | (rp << 4)];
}
case 'jc':
case 'jm':
case 'jmp':
case 'jnc':
case 'jnz':
case 'jp':
case 'jpe':
case 'jpo':
case 'jz': {
this._expectArgsCount(sl, 1);
this._argLabel(sl, sl.args[0], curAddr);
let ie = 0;
if (instrName === 'jmp') {
ie = 0b11000011;
} else {
let ccc = instrName.slice(1);
ie = 0b11000010 | (this._translateCCC(ccc, sl) << 3);
}
return [ie, 0, 0];
}
case 'lda': {
this._expectArgsCount(sl, 1);
let num = this._argImmOrLabel(sl, sl.args[0], curAddr);
// 16-bit immediates encoded litte-endian.
return [0b00111010, num & 0xff, (num >> 8) & 0xff];
}
case 'ldax': {
this._expectArgsCount(sl, 1);
let rp = this._argRP(sl, sl.args[0]);
return [0b00001010 | (rp << 4)];
}
case 'lhld': {
this._expectArgsCount(sl, 1);
let num = this._argImmOrLabel(sl, sl.args[1], curAddr);
// 16-bit immediates encoded litte-endian.
return [0b00101010, num & 0xff, (num >> 8) & 0xff];
}
case 'lxi': {
this._expectArgsCount(sl, 2);
let rp = this._argRP(sl, sl.args[0]);
let num = this._argImmOrLabel(sl, sl.args[1], curAddr);
// 16-bit immediates encoded litte-endian.
return [0b00000001 | (rp << 4), num & 0xff, (num >> 8) & 0xff];
}
case 'mov': {
this._expectArgsCount(sl, 2);
let rd = this._argR(sl, sl.args[0]);
let rs = this._argR(sl, sl.args[1]);
return [0b01000000 | (rd << 3) | rs];
}
case 'mvi': {
this._expectArgsCount(sl, 2);
let r = this._argR(sl, sl.args[0]);
let imm = this._argImm(sl, sl.args[1]);
return [0b110 | (r << 3), imm];
}
case 'nop': {
this._expectArgsCount(sl, 0);
return [0b00000000];
}
case 'ora': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b10110000 | r];
}
case 'ori': {
this._expectArgsCount(sl, 1);
let imm = this._argImm(sl, sl.args[0]);
return [0b11110110, imm];
}
case 'pchl': {
this._expectArgsCount(sl, 0);
return [0b11101001];
}
case 'pop': {
this._expectArgsCount(sl, 1);
let rp = this._argRP(sl, sl.args[0]);
return [0b11000001 | (rp << 4)];
}
case 'push': {
this._expectArgsCount(sl, 1);
let rp = this._argRP(sl, sl.args[0]);
return [0b11000101 | (rp << 4)];
}
case 'rc':
case 'ret':
case 'rnc':
case 'rnz':
case 'rm':
case 'rp':
case 'rpe':
case 'rpo':
case 'rz': {
this._expectArgsCount(sl, 0);
let ie = 0;
if (instrName === 'ret') {
ie = 0b11001001;
} else {
let ccc = instrName.slice(1);
ie = 0b11000000 | (this._translateCCC(ccc, sl) << 3);
}
return [ie];
}
case 'ral': {
this._expectArgsCount(sl, 0);
return [0b00010111];
}
case 'rar': {
this._expectArgsCount(sl, 0);
return [0b00011111];
}
case 'rlc': {
this._expectArgsCount(sl, 0);
return [0b00000111];
}
case 'rrc': {
this._expectArgsCount(sl, 0);
return [0b00001111];
}
case 'sbb': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b10011000 | r];
}
case 'sbi': {
this._expectArgsCount(sl, 1);
let imm = this._argImm(sl, sl.args[0]);
return [0b11011110, imm];
}
case 'shld': {
this._expectArgsCount(sl, 1);
let num = this._argImmOrLabel(sl, sl.args[1], curAddr);
// 16-bit immediates encoded litte-endian.
return [0b00100010, num & 0xff, (num >> 8) & 0xff];
}
case 'sphl': {
this._expectArgsCount(sl, 0);
return [0b11111001];
}
case 'sta': {
this._expectArgsCount(sl, 1);
let num = this._argImmOrLabel(sl, sl.args[0], curAddr);
// 16-bit immediates encoded litte-endian.
return [0b00110010, num & 0xff, (num >> 8) & 0xff];
}
case 'stax': {
this._expectArgsCount(sl, 1);
let rp = this._argRP(sl, sl.args[0]);
return [0b00000010 | (rp << 4)];
}
case 'stc': {
this._expectArgsCount(sl, 0);
return [0b00110111];
}
case 'sub': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b10010000 | r];
}
case 'sui': {
this._expectArgsCount(sl, 1);
let imm = this._argImm(sl, sl.args[0]);
return [0b11010110, imm];
}
case 'xchg': {
this._expectArgsCount(sl, 0);
return [0b11101011];
}
case 'xra': {
this._expectArgsCount(sl, 1);
let r = this._argR(sl, sl.args[0]);
return [0b10101000 | r];
}
case 'xri': {
this._expectArgsCount(sl, 1);
let imm = this._argImm(sl, sl.args[0]);
return [0b11101110, imm];
}
case 'xthl': {
this._expectArgsCount(sl, 0);
return [0b11100011];
}
default:
this._assemblyError(sl.pos, `unknown instruction ${sl.instr}`);
}
return [];
}
_expectArgsCount(sl, count) {
if (sl.args.length != count) {
this._assemblyError(sl.pos, `want ${count} args for ${sl.instr}; got ${sl.args.length}`);
}
}
// Expect arg to be a register pair and return its encoding.
_argRP(sl, arg) {
switch (arg.toLowerCase()) {
case 'bc': case 'b': return 0b00;
case 'de': case 'd': return 0b01;
case 'hl': case 'h': return 0b10;
case 'sp': case 'psw': return 0b11;
default:
this._assemblyError(sl.pos, `invalid register pair ${arg}`);
}
}
// Expect arg to be a register and return its encoding.
_argR(sl, arg) {
switch (arg.toLowerCase()) {
case 'a': return 0b111;
case 'b': return 0b000;
case 'c': return 0b001;
case 'd': return 0b010;
case 'e': return 0b011;
case 'h': return 0b100;
case 'l': return 0b101;
case 'm': return 0b110;
default:
this._assemblyError(sl.pos, `invalid register ${arg}`);
}
}
// Expect arg to be an immediate number and return its encoding.
_argImm(sl, arg) {
let n = this._parseNumber(arg);
if (isNaN(n)) {
this._assemblyError(sl.pos, `invalid immediate ${arg}`);
}
return n;
}
// Expect arg to be a label name and add an entry in labelToFixups for it.
_argLabel(sl, arg, curAddr) {
if (!/^[a-zA-Z_][a-zA-Z_0-9]/.test(arg)) {
this._assemblyError(sl.pos, `invalid label name ${arg}`);
}
if (!this.labelToFixups.has(arg)) {
this.labelToFixups.set(arg, [{addr: curAddr, pos: sl.pos}]);
} else {
this.labelToFixups.get(arg).push({addr: curAddr, pos: sl.pos});
}
if (this.tracing) {
console.log(`fixups for '${arg}': ${JSON.stringify(this.labelToFixups.get(arg))}`);
}
}
// Arg can be either an immediate (if it looks like a number) or a label (if
// it doesn't). Its value is returned in any case, as a number. For labels,
// a 0 is returned and the fixup map is updated.
_argImmOrLabel(sl, arg, curAddr) {
let n = this._parseNumber(arg);
if (isNaN(n)) {
// Label.
this._argLabel(sl, arg, curAddr);
return 0;
} else {
// Number.
return n;
}
}
// Parses numbers in accepted asm format (24, 1Ah, 0101b)
// A strict parser of binary, hex and decimal numbers. Returns NaN for invalid
// numbers with bad prefixes, etc.
_parseNumber(n) {
n = n.toLowerCase();
// Find supported base; validator will be set to a regexp to validate the
// number's contents. n will be trimmed if needed.
let validator = null;
let base = 10;
if (n.endsWith('h')) {
validator = /^[0-9a-f]+$/;
n = n.slice(0, -1);
base = 16;
} else if (n.endsWith('b')) {
validator = /^[0-1]+$/;
n = n.slice(0, -1);
base = 2;
} else {
validator = /^[0-9]+$/;
}
if (!validator.test(n)) {
return NaN;
} else {
return parseInt(n, base);
}
}
// Translates the CCC (condition code) ending to its binary encoding.
_translateCCC(ccc, sl) {
switch (ccc) {
case 'nz': return 0b000;
case 'z': return 0b001;
case 'nc': return 0b010;
case 'c': return 0b011;
case 'po': return 0b100;
case 'pe': return 0b101;
case 'p': return 0b110;
case 'm': return 0b111;
default:
this._assemblyError(sl.pos, `unknown CCC ending ${ccc}`);
}
}
_assemblyError(pos, msg) {
throw new AssemblyError(msg, pos);
}
}
// Exports.
module.exports.Assembler = Assembler;
module.exports.AssemblyError = AssemblyError;
},{}],2:[function(require,module,exports){
// Collection of all objects we need in the browser, re-exported from a single
// file for use with Browserify (see Makefile).
'use strict';
const { Parser, ParseError } = require('../src/parser.js');
const { Assembler, AssemblyError } = require('../src/assembler.js');
const CPU8080 = require('../src/sim8080');
module.exports.Assembler = Assembler;
module.exports.AssemblyError = AssemblyError;
module.exports.Parser = Parser;
module.exports.ParseError = ParseError;
module.exports.CPU8080 = CPU8080;
},{"../src/assembler.js":1,"../src/parser.js":3,"../src/sim8080":4}],3:[function(require,module,exports){
'use strict';
// Lexer for 8080 assembly.
// Usage: create it given the input as an array of chars. Then repeatedly
// call token() until it returns null.
//
// token() returns objects with:
// {
// name: <token name>,
// value: <raw token value from the input buffer, as a string>,
// pos: <token position in the buffer>
// }
//
// Possible token names: LABEL, ID, <ops>, STRING, NEWLINE.
// For ops, name and value are the same, e.g. {name: '[', value: ']', pos: ...}
// For STRING, the value's quotes are stripped
//
// IDs are returned for everything alphanumeric, including directives (starting
// with a '.') and numbers. Numbers can be hex - difficult to distinguish from
// IDs otherwise (e.g. "fah" could theoretically be a hex number "fa").
class Lexer {
// buf should be an array of chars
constructor(buf) {
this.pos = 0;
this.buf = buf;
// These state variables are used to keep track of the line and column
// of tokens.
this.lineCount = 1;
this.lastNewlinePos = 0;
this._ops = new Set([':', ',', '[', ']']);
}
// Get the next token. Returns objects as described in the class comment; at
// end of input, returns null every time it's called.
token() {
this._skipNonTokens();
if (this.pos >= this.buf.length) {
return null;
}
if (this.buf[this.pos] === ';') {
this._skipComment();
}
let c = this.buf[this.pos];
if (this._isNewline(c)) {
let tok = {name: 'NEWLINE', value: c, pos: this._position()};
this._skipNewlines();
return tok;
}
if (this._ops.has(c)) {
// Known operator.
let tok = {name: c, value: c, pos: this._position()};
this.pos++;
return tok;
} else {
if (this._isAlphaNum(c)) {
return this._id();
} else if (c === "'") {
return this._string();
} else {
throw new ParseError(`invalid token`, this._position());
}
}
}
// Process and return an ID or LABEL.
_id() {
let endpos = this.pos + 1;
while (endpos < this.buf.length && this._isAlphaNum(this.buf[endpos])) {
endpos++;
}
if (endpos < this.buf.length && this.buf[endpos] === ':') {
let tok = {
name: 'LABEL',
value: this.buf.slice(this.pos, endpos).join(''),
pos: this._position()
};
this.pos = endpos + 1;
return tok;
} else {
let tok = {
name: 'ID',
value: this.buf.slice(this.pos, endpos).join(''),
pos: this._position()
};
this.pos = endpos;
return tok;
}
}
_string() {
// this.pos points to the opening quote; find the ending quote.
let end = this.buf.indexOf("'", this.pos + 1);
if (end < 0) {
throw new ParseError(`unterminated quote`, this._position());
} else {
var tok = {
name: "STRING",
value: this.buf.slice(this.pos + 1, end),
pos: this._position()
};
this.pos = end + 1;
return tok;
}
}
_skipNonTokens() {
while (this.pos < this.buf.length) {
let c = this.buf[this.pos];
if (c === ' ' || c === '\t') {
this.pos++;
} else {
break;
}
}
}
_skipComment() {
let endpos = this.pos + 1;
while (endpos < this.buf.length && !this._isNewline(this.buf[endpos])) {
endpos++;
}
this.pos = endpos;
}
_isNewline(c) {
return c === '\r' || c === '\n';
}
_skipNewlines() {
while (this.pos < this.buf.length) {
let c = this.buf[this.pos];
if (this._isNewline(c)) {
this.lineCount++;
this.lastNewlinePos = this.pos;
this.pos++;
} else {
break;
}
}
}
_isAlphaNum(c) {
return (c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
(c >= '0' && c <= '9') ||
c === '.' || c === '_' || c === '$';
}
_position() {
return new Position(this.lineCount, this.pos - this.lastNewlinePos);
}
}
class Position {
constructor(line, col) {
this.line = line;
this.col = col;
}
toString() {
return `${this.line}:${this.col}`;
}
}
// Custom exception type thrown by the parser/lexer.
class ParseError extends Error {
constructor(message, pos) {
super(message);
this.pos = pos;
}
toString() {
return `Parse error at ${this.pos}: ${this.message}`;
}
}
ParseError.prototype.toString = function() {
return `Parse error at ${this.position}: ${this.message}`;
};
// Parser - the main entry point to this file. See comment on top of
// constructor.
class Parser {
constructor() {
}
// Parse string s and return an array of "source line" objects. Each source
// line has:
// {
// label: <optional label, null if none>,
// instr: <optional instruction, null if none>,
// args: <array of args>,
// pos: Position
// }
//
// There can be standalone labels (w/o an instruction), and instructions w/o
// labels. There can be no arguments without an instruction.
parse(s) {
let result = [];
let lexer = new Lexer([...s]);
while (true) {
let curTok = lexer.token();
// Skip empty lines.
while (curTok !== null && curTok.name === 'NEWLINE') {
curTok = lexer.token();
}
if (curTok === null) {
return result;
}
// Here curTok is the first token of an actual line.
// Figure out whether there's a label.
let labelTok = null;
if (curTok.name === 'LABEL') {
labelTok = curTok;
curTok = lexer.token();
}
// A standalone label is OK, we add it to result and continue to the next
// line.
if (curTok === null || curTok.name == 'NEWLINE') {
result.push({
label: labelTok.value, instr: null, args: [], pos: labelTok.pos});
continue;
}
// ... there's more in the line; expect an instruction.
if (curTok.name !== 'ID') {
this._parseError(curTok.pos, `want ID; got "${curTok.value}"`);
}
let idTok = curTok;
let args = [];
curTok = lexer.token();
// Arguments are optional, and we accept any number; allow a sequence
// of arguments separated by ',' tokens.
while (curTok !== null && curTok.name !== 'NEWLINE') {
if (curTok.name === 'ID' || curTok.name === 'STRING') {
args.push(curTok.value);
} else {
this._parseError(curTok.pos, `want arg; got "${curTok.value}"`);
}
curTok = lexer.token();
if (curTok !== null && curTok.name === ',') {
curTok = lexer.token();
}
}
result.push({
label: labelTok === null ? null : labelTok.value,
instr: idTok.value,
args: args,
pos: idTok.pos});
}
}
_parseError(pos, msg) {
throw new ParseError(msg, pos);
}
}
// Exports.
module.exports.Parser = Parser;
module.exports.ParseError = ParseError;
},{}],4:[function(require,module,exports){
// Forked from https://github.com/maly/8080js with minor tweaks.
// Original BSD-based license header below.
//
// Copyright (C) 2013, 2014 Martin Maly
//
// Precise JS emulator for Intel 8080 CPU.
//
// Based on BSD-licensed work by Copyright (C) 2008 Chris Double
//
// All flags and instructions fixed to provide perfect compatibility
// with original "silicon" CPU.
//
// This emulator passes the Exerciser http://www.idb.me.uk/sunhillow/8080.html
//
// Big thanks to Roman Borik (http://pmd85.borik.net). His help lets me
// achieve such a perfect HW compatibility.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
// FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
/* jshint sub: true */
(function(exports){
var ds = [["NOP",1],["LXI B,#1",3],["STAX B",1],["INX B",1],["INR B",1],["DCR B",1],["MVI B, %1",2],["RLC",1],["-",0],["DAD B",1],["LDAX B",1],
["DCX B",1],["INR C",1],["DCR C",1],["MVI C,%1",2],["RRC",1],["-",0],["LXI D,#1",3],["STAX D",1],["INX D",1],["INR D",1],["DCR D",1],["MVI D, %1",2],
["RAL",1],["-",0],["DAD D",1],["LDAX D",1],["DCX D",1],["INR E",1],["DCR E",1],["MVI E,%1",2],["RAR",1],["RIM",1],["LXI H,#1",3],["SHLD #1",3],
["INX H",1],["INR H",1],["DCR H",1],["MVI H,%1",2],["DAA",1],["-",0],["DAD H",1],["LHLD #1",3],["DCX H",1],["INR L",1],["DCR L",1],["MVI L, %1",2],
["CMA",1],["SIM",1],["LXI SP, #1",3],["STA #1",3],["INX SP",1],["INR M",1],["DCR M",1],["MVI M,%1",2],["STC",1],["-",0],["DAD SP",1],["LDA #1",3],
["DCX SP",1],["INR A",1],["DCR A",1],["MVI A,%1",2],["CMC",1],["MOV B,B",1],["MOV B,C",1],["MOV B,D",1],["MOV B,E",1],["MOV B,H",1],["MOV B,L",1],
["MOV B,M",1],["MOV B,A",1],["MOV C,B",1],["MOV C,C",1],["MOV C,D",1],["MOV C,E",1],["MOV C,H",1],["MOV C,L",1],["MOV C,M",1],["MOV C,A",1],
["MOV D,B",1],["MOV D,C",1],["MOV D,D",1],["MOV D,E",1],["MOV D,H",1],["MOV D,L",1],["MOV D,M",1],["MOV D,A",1],["MOV E,B",1],["MOV E,C",1],
["MOV E,D",1],["MOV E,E",1],["MOV E,H",1],["MOV E,L",1],["MOV E,M",1],["MOV E,A",1],["MOV H,B",1],["MOV H,C",1],["MOV H,D",1],["MOV H,E",1],
["MOV H,H",1],["MOV H,L",1],["MOV H,M",1],["MOV H,A",1],["MOV L,B",1],["MOV L,C",1],["MOV L,D",1],["MOV L,E",1],["MOV L,H",1],["MOV L,L",1],
["MOV L,M",1],["MOV L,A",1],["MOV M,B",1],["MOV M,C",1],["MOV M,D",1],["MOV M,E",1],["MOV M,H",1],["MOV M,L",1],["HLT",1],["MOV M,A",1],
["MOV A,B",1],["MOV A,C",1],["MOV A,D",1],["MOV A,E",1],["MOV A,H",1],["MOV A,L",1],["MOV A,M",1],["MOV A,A",1],["ADD B",1],["ADD C",1],["ADD D",1],
["ADD E",1],["ADD H",1],["ADD L",1],["ADD M",1],["ADD A",1],["ADC B",1],["ADC C",1],["ADC D",1],["ADC E",1],["ADC H",1],["ADC L",1],["ADC M",1],
["ADC A",1],["SUB B",1],["SUB C",1],["SUB D",1],["SUB E",1],["SUB H",1],["SUB L",1],["SUB M",1],["SUB A",1],["SBB B",1],["SBB C",1],["SBB D",1],
["SBB E",1],["SBB H",1],["SBB L",1],["SBB M",1],["SBB A",1],["ANA B",1],["ANA C",1],["ANA D",1],["ANA E",1],["ANA H",1],["ANA L",1],["ANA M",1],
["ANA A",1],["XRA B",1],["XRA C",1],["XRA D",1],["XRA E",1],["XRA H",1],["XRA L",1],["XRA M",1],["XRA A",1],["ORA B",1],["ORA C",1],["ORA D",1],
["ORA E",1],["ORA H",1],["ORA L",1],["ORA M",1],["ORA A",1],["CMP B",1],["CMP C",1],["CMP D",1],["CMP E",1],["CMP H",1],["CMP L",1],["CMP M",1],
["CMP A",1],["RNZ",1],["POP B",1],["JNZ #1",3],["JMP #1",3],["CNZ #1",3],["PUSH B",1],["ADI %1",2],["RST 0",1],["RZ",1],["RET",1],["JZ #1",3],["-",0],
["CZ #1",3],["CALL #1",3],["ACI %1",2],["RST 1",1],["RNC",1],["POP D",1],["JNC #1",3],["OUT %1",2],["CNC #1",3],["PUSH D",1],["SUI %1",2],["RST 2",1],
["RC",1],["-",0],["JC #1",3],["IN %1",2],["CC #1",3],["-",0],["SBI %1",2],["RST 3",1],["RPO",1],["POP H",1],["JPO #1",3],["XTHL",1],["CPO #1",3],
["PUSH H",1],["ANI %1",2],["RST 4",1],["RPE",1],["PCHL",1],["JPE #1",3],["XCHG",1],["CPE #1",3],["-",0],["XRI %1",2],["RST 5",1],["RP",1],["POP PSW",1],
["JP #1",3],["DI",1],["CP #1",3],["PUSH PSW",1],["ORI %1",2],["RST 6",1],["RM",1],["SPHL",1],["JM #1",3],["EI",1],["CM #1",3],["-",0],["CPI %1",2],["RST 7",1]];
var toHexN = function(n,d) {
var s = n.toString(16);
while (s.length <d) {s = '0'+s;}
return s.toUpperCase();
};
var toHex2 = function(n) {return toHexN(n & 0xff,2);};
var toHex4 = function(n) {return toHexN(n,4);};
exports.disasm = function(i,a,b,c,d) {
var sx = ds[i];
var s = sx[0];
var d8 = toHex2(a);
s=s.replace("%1","$"+d8);
var d16 = toHex2(b)+toHex2(a);
s=s.replace("#1","$"+d16);
return [s,sx[1]];
};
})(typeof exports === 'undefined'? this['CPUD8080']={}: exports);
(function(exports) {
var flagTable = [70,2,2,6,2,6,6,2,2,6,6,2,6,2,2,6,2,6,6,2,6,2,2,6,6,2,2,6,2,6,6,2,2,6,6,2,6,2,2,6,6,2,2,6,2,6,6,2,6,2,2,6,2,6,6,2,2,6,6,2,6,2,2,6,2,6,6,2,6,2,2,6,6,2,2,6,2,6,6,2,6,2,2,6,2,6,6,2,2,6,6,2,6,2,2,6,6,2,2,6,2,6,6,2,2,6,6,2,6,2,2,6,2,6,6,2,6,2,2,6,6,2,2,6,2,6,6,2,130,134,134,130,134,130,130,134,134,130,130,134,130,134,134,130,134,130,130,134,130,134,134,130,130,134,134,130,134,130,130,134,134,130,130,134,130,134,134,130,130,134,134,130,134,130,130,134,130,134,134,130,134,130,130,134,134,130,130,134,130,134,134,130,134,130,130,134,130,134,134,130,130,134,134,130,134,130,130,134,130,134,134,130,134,130,130,134,134,130,130,134,130,134,134,130,130,134,134,130,134,130,130,134,134,130,130,134,130,134,134,130,134,130,130,134,130,134,134,130,130,134,134,130,134,130,130,134];
var daaTable = [70,258,514,774,1026,1286,1542,1794,2050,2310,4114,4374,4630,4882,5142,5394,4098,4358,4614,4866,5126,5378,5634,5894,6150,6402,8210,8470,8726,8978,9238,9490,8194,8454,8710,8962,9222,9474,9730,9990,10246,10498,12310,12562,12818,13078,13330,13590,12294,12546,12802,13062,13314,13574,13830,14082,14338,14598,16402,16662,16918,17170,17430,17682,16386,16646,16902,17154,17414,17666,17922,18182,18438,18690,20502,20754,21010,21270,21522,21782,20486,20738,20994,21254,21506,21766,22022,22274,22530,22790,24598,24850,25106,25366,25618,25878,24582,24834,25090,25350,25602,25862,26118,26370,26626,26886,28690,28950,29206,29458,29718,29970,28674,28934,29190,29442,29702,29954,30210,30470,30726,30978,32914,33174,33430,33682,33942,34194,32898,33158,33414,33666,33926,34178,34434,34694,34950,35202,37014,37266,37522,37782,38034,38294,36998,37250,37506,37766,38018,38278,38534,38786,39042,39302,65623,65811,66067,66327,66579,66839,65607,65795,66051,66311,66563,66823,67079,67331,67587,67847,69651,69911,70167,70419,70679,70931,69635,69895,70151,70403,70663,70915,71171,71431,71687,71939,73747,74007,74263,74515,74775,75027,73731,73991,74247,74499,74759,75011,75267,75527,75783,76035,77847,78099,78355,78615,78867,79127,77831,78083,78339,78599,78851,79111,79367,79619,79875,80135,81939,82199,82455,82707,82967,83219,81923,82183,82439,82691,82951,83203,83459,83719,83975,84227,86039,86291,86547,86807,87059,87319,86023,86275,86531,86791,87043,87303,87559,87811,88067,88327,90135,90387,90643,90903,91155,91415,24583,24835,25091,25351,25603,25863,26119,26371,26627,26887,28691,28951,29207,29459,29719,29971,28675,28935,29191,29443,29703,29955,30211,30471,30727,30979,32915,33175,33431,33683,33943,34195,32899,33159,33415,33667,33927,34179,34435,34695,34951,35203,37015,37267,37523,37783,38035,38295,36999,37251,37507,37767,38019,38279,38535,38787,39043,39303,41111,41363,41619,41879,42131,42391,41095,41347,41603,41863,42115,42375,42631,42883,43139,43399,45203,45463,45719,45971,46231,46483,45187,45447,45703,45955,46215,46467,46723,46983,47239,47491,49303,49555,49811,50071,50323,50583,49287,49539,49795,50055,50307,50567,50823,51075,51331,51591,53395,53655,53911,54163,54423,54675,53379,53639,53895,54147,54407,54659,54915,55175,55431,55683,57491,57751,58007,58259,58519,58771,57475,57735,57991,58243,58503,58755,59011,59271,59527,59779,61591,61843,62099,62359,62611,62871,61575,61827,62083,62343,62595,62855,63111,63363,63619,63879,65623,65811,66067,66327,66579,66839,65607,65795,66051,66311,66563,66823,67079,67331,67587,67847,69651,69911,70167,70419,70679,70931,69635,69895,70151,70403,70663,70915,71171,71431,71687,71939,73747,74007,74263,74515,74775,75027,73731,73991,74247,74499,74759,75011,75267,75527,75783,76035,77847,78099,78355,78615,78867,79127,77831,78083,78339,78599,78851,79111,79367,79619,79875,80135,81939,82199,82455,82707,82967,83219,81923,82183,82439,82691,82951,83203,83459,83719,83975,84227,86039,86291,86547,86807,87059,87319,86023,86275,86531,86791,87043,87303,87559,87811,88067,88327,90135,90387,90643,90903,91155,91415,1542,1794,2050,2310,2566,2818,3078,3330,3586,3846,4114,4374,4630,4882,5142,5394,5634,5894,6150,6402,6658,6918,7170,7430,7686,7938,8210,8470,8726,8978,9238,9490,9730,9990,10246,10498,10754,11014,11266,11526,11782,12034,12310,12562,12818,13078,13330,13590,13830,14082,14338,14598,14854,15106,15366,15618,15874,16134,16402,16662,16918,17170,17430,17682,17922,18182,18438,18690,18946,19206,19458,19718,19974,20226,20502,20754,21010,21270,21522,21782,22022,22274,22530,22790,23046,23298,23558,23810,24066,24326,24598,24850,25106,25366,25618,25878,26118,26370,26626,26886,27142,27394,27654,27906,28162,28422,28690,28950,29206,29458,29718,29970,30210,30470,30726,30978,31234,31494,31746,32006,32262,32514,32914,33174,33430,33682,33942,34194,34434,34694,34950,35202,35458,35718,35970,36230,36486,36738,37014,37266,37522,37782,38034,38294,38534,38786,39042,39302,39558,39810,40070,40322,40578,40838,65623,65811,66067,66327,66579,66839,67079,67331,67587,67847,68103,68355,68615,68867,69123,69383,69651,69911,70167,70419,70679,70931,71171,71431,71687,71939,72195,72455,72707,72967,73223,73475,73747,74007,74263,74515,74775,75027,75267,75527,75783,76035,76291,76551,76803,77063,77319,77571,77847,78099,78355,78615,78867,79127,79367,79619,79875,80135,80391,80643,80903,81155,81411,81671,81939,82199,82455,82707,82967,83219,83459,83719,83975,84227,84483,84743,84995,85255,85511,85763,86039,86291,86547,86807,87059,87319,87559,87811,88067,88327,88583,88835,89095,89347,89603,89863,90135,90387,90643,90903,91155,91415,26119,26371,26627,26887,27143,27395,27655,27907,28163,28423,28691,28951,29207,29459,29719,29971,30211,30471,30727,30979,31235,31495,31747,32007,32263,32515,32915,33175,33431,33683,33943,34195,34435,34695,34951,35203,35459,35719,35971,36231,36487,36739,37015,37267,37523,37783,38035,38295,38535,38787,39043,39303,39559,39811,40071,40323,40579,40839,41111,41363,41619,41879,42131,42391,42631,42883,43139,43399,43655,43907,44167,44419,44675,44935,45203,45463,45719,45971,46231,46483,46723,46983,47239,47491,47747,48007,48259,48519,48775,49027,49303,49555,49811,50071,50323,50583,50823,51075,51331,51591,51847,52099,52359,52611,52867,53127,53395,53655,53911,54163,54423,54675,54915,55175,55431,55683,55939,56199,56451,56711,56967,57219,57491,57751,58007,58259,58519,58771,59011,59271,59527,59779,60035,60295,60547,60807,61063,61315,61591,61843,62099,62359,62611,62871,63111,63363,63619,63879,64135,64387,64647,64899,65155,65415,65623,65811,66067,66327,66579,66839,67079,67331,67587,67847,68103,68355,68615,68867,69123,69383,69651,69911,70167,70419,70679,70931,71171,71431,71687,71939,72195,72455,72707,72967,73223,73475,73747,74007,74263,74515,74775,75027,75267,75527,75783,76035,76291,76551,76803,77063,77319,77571,77847,78099,78355,78615,78867,79127,79367,79619,79875,80135,80391,80643,80903,81155,81411,81671,81939,82199,82455,82707,82967,83219,83459,83719,83975,84227,84483,84743,84995,85255,85511,85763,86039,86291,86547,86807,87059,87319,87559,87811,88067,88327,88583,88835,89095,89347,89603,89863,90135,90387,90643,90903,91155,91415];
function pad(str, n) {
var r = [];
for(var i=0; i < (n - str.length); ++i)
r.push("0");
r.push(str);
return r.join("");
}
var CARRY = 0x01;
var PARITY = 0x04;
var HALFCARRY = 0x10;
var INTERRUPT = 0;
var ZERO = 0x40;
var SIGN = 0x80;
var byteTo, byteAt, portOut,portIn, ticks;
var Cpu = function ()
{
this.b = 0;
this.c = 0;
this.d = 0;
this.e = 0;
this.f = 0;
this.h = 0;
this.l = 0;
this.a = 0;
this.pc = 0;
this.inte = 0;
this.halted = 0;
this.sp = 0xF000;
this.cycles = 0;
this.ram=[];
};
Cpu.prototype.af = function() {
return this.a << 8 | this.f;
};
Cpu.prototype.AF = function(n) {
this.a = n >> 8 & 0xFF;
this.f = n & 0xFF;
};
Cpu.prototype.bc = function () {
return ((this.b & 0xff) << 8) | (this.c & 0xff);